Compare Solid State Drives

Compare Crucial M550 256GB vs SANDISK Optimus GX 7100 2TB

The main differences between Crucial M550 256GB and SANDISK Optimus GX 7100 2TB are in Capacity, Interface, NVME and Form Factor.

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Crucial M550 256GB

SANDISK Optimus GX 7100 2TB

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Pangoly Score (How do we rate?)

89

Pangoly Score (How do we rate?)

-

Brand

Crucial

Brand

SanDisk

Model

CT256M550SSD1

Model

SDSP71200TAN-000E0
SDSP71200TAN

Release Date

📅 March 2014

Release Date

📅 February 2026

* First availability for purchase, it may not correspond to the actual market launch date.

User reviews

★★★★★

(152 reviews)

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Performance (Charts)

255th / 1746

Performance (Charts)

n/a

Effective Value

277th / 336

Effective Value

-

Price history

View Details ►

Price history

View Details ►

Price/GB

$0.70

Price/GB

$0.27

GB/$1

1.44

GB/$1

3.71

Pros

Strong performance
Good upgrade over the M500
Marvell 88SS9189 controller

Pros

-

Cons

Not as fast as some high-end drives

Cons

-

Series

M550

Series

-

Capacity

256 GB

Capacity

2000 GB

Interface

SATA 6 Gb/s

Interface

PCIe Gen4 x4

NVME

No

NVME

Yes

Form Factor

2.5"

Form Factor

M.2-2280

SSD Controller

Marvell 9189

SSD Controller

-

NAND Flash Type

MLC

NAND Flash Type

-

Max Sequential Read

Up to 550 MB/s

Max Sequential Read

-

Max Sequential Write

Up to 500 MB/s

Max Sequential Write

-

MTBF

1,500,000 hours

MTBF

-

Options (1)

Crucial M550 512GB

512 GB
$199.99

Options (3)

	500GB $159.99
	4TB $1,199.99
	1TB $299.99

Comparison and key differences summary

Reasons to buy the Crucial M550 256GB:

67% cheaper, you can save $361.61

Reasons to buy the SANDISK Optimus GX 7100 2TB:

Newer Product, it was released around 12 years later
More Capacity (+1744 GB available)
Newer interface (PCIe Gen4 x4)

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